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a genus of fishes of the family Cyprinidae. The body is elongated and of medium size. The posterior section of the keel, located behind the ventral fin, is free of scales. There are several species, inhabiting the basins of the Black, Azov, Caspian, and Aral seas, Van Lake, bodies of water in southern Iran, and the Tigris and Euphrates rivers. The USSR has a single species, Chalcalburnus chalcoides. There are about nine subspecies, which differ in their habits and life histories. For example, the Crimean (C. chalcoides mentoides) and Batumi (C. chalcoides derjugini) subspecies live permanently in fresh water; the Aral (C. chalcoides aralensis) subspecies lives in the Aral Sea; and the Caspian subspecies (C. chalcoides chalcoides) is anadromous. The type subspecies is Chalcalburnus c. chalcoides. The body has a length up to 40 cm and weighs up to 360 g. Spawning takes place in the spring in the Terek and Kura rivers; some individuals enter the Volga and Ural rivers. The females deposit 10,000–50,000 eggs. The diet consists of planktonic crustaceans, insects that have fallen into the water, and small fish. Chalcalburnus is commercially fished and bred.


Berg, L. S. Ryby presnykh vod SSSR i sopredel’nykh stran, 4th ed., part 2, Moscow, 1949.
Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.


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Histological examination of ovarian development of shemaya Chalcalburnus chalcoides living in Lake TodUrge (Sivas/Turkey).
In spring, Chalcalburnus tarichi leaves its eggs in the brook of Bendimahi like other brooks which flow into Van Lake.
Whereas many studies [10,8,12,30] have implicated industrial or human activities as possible source of pollution of the water body and biota the work of Karadede and Unlu [18] on the concentrations of some heavy metals in the water, sediment and fish species (Acanthobrama marmid, Chalcalburnus mossulensis, Chondrostoma regium, Carasobarbus luteus, Capoetta trutta and Cyprinus carpio) from the Ataturk Dam Lake, Turkey indicated general absence of serious pollution.